几题高三英语选择题,求解释.

题目

几题高三英语选择题,求解释.
After making sure that everyone was on board , the captain have the order to__A. set aside .B.set out C.set up D.set down 选B On__Saturday and Sunday the number of customers going to the supermarket rises by_D_thousand . A.the; / B./ ; aC.the ;theD./;the

答案

set up,意为出航,全句意思是确定所有人都上船后,船长下令出航
by the thousand意为大批量,全句意思是每到周六和周日,到超市的顾客数量大批量的增长
on Saturday and Sunday ,意为在星期六和星期日